An environmentally friendly sludge heavy metal removal and stabilization treatment device

Abstract

The invention discloses an environmentally friendly sediment heavy metal removal and stabilization treatment device in the technical field of sediment purification treatment, comprising a carrying box, an operating box and a control system are rotatably connected in the carrying box, a leaching component and a curing component are arranged in the operating box, a collection component is fixedly connected to one side of the operating box, the collection component comprises a collection pipe, a mud inlet is provided at the top of the collection pipe, a collection cover is fixedly connected to the bottom of the collection pipe, a filter is fixedly connected in the collection cover, and a baffle is symmetrically fixedly connected to the bottom of the collection cover. The invention is simple and easy to operate, and the heavy metal removal treatment and stabilization treatment are respectively carried out in the form of a leaching block and a curing block, which are synchronously and integratedly installed in the carrying box to achieve the effects of synchronous collection, heavy metal removal and stabilization, thereby improving the sediment purification efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge purification treatment, and in particular is an environmentally friendly sludge heavy metal removal and stabilization treatment device. Background Art

[0002] Heavy metal pollution in river and lake sediments poses a huge threat to the water environment. The mobility and bioavailability of heavy metals may have long-term effects on human health through water bodies, food chains, etc. Therefore, the treatment of heavy metal-contaminated sediments is one of the important aspects of water environment protection.

[0003] The core of the sediment heavy metal removal and stabilization treatment device is to efficiently and safely remove heavy metals from sediments and reduce the mobility and bioavailability of heavy metals through stabilization treatment.

[0004] Traditional sediment heavy metal removal and stabilization treatment technology: first, the sediment is dredged and transferred to a container for heavy metal removal, and then transferred to other containers for stabilization. The transfer process is complicated and wastes a lot of time, and the purification efficiency of the sediment is low. Therefore, it is necessary to propose an environmentally friendly sediment heavy metal removal and stabilization treatment device that integrates sediment collection, metal removal treatment and stabilization treatment, improves the efficiency of sediment purification treatment, and achieves green and environmental protection effects. Summary of the invention

[0005] In order to solve the above-mentioned problems, the purpose of the present invention is to provide an environmentally friendly sludge heavy metal removal and stabilization treatment device, in which the heavy metal removal treatment and stabilization treatment are respectively carried out in the form of a leaching block and a solidification block, and are synchronously and integratedly installed in a carrying box to achieve the effect of synchronous collection, heavy metal removal and stabilization, thereby improving the sludge purification efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: an environmentally friendly sediment heavy metal removal and stabilization treatment device comprises a carrying box, an operating box is rotatably connected in the carrying box, a leaching component for chemically leaching to remove heavy metals and a solidifying component for solidifying and stabilizing heavy metals are arranged in the operating box, and a collecting component for lifting and collecting sediment is fixedly connected to one side of the operating box close to the leaching component;

[0007] The collecting component includes a collecting tube with an opening at the bottom end, and a mud inlet for lifting and collecting bottom mud is provided on the top of the collecting tube near the elution component. The bottom end of the collecting tube passes through the side wall of the carrying box, and the top of the collecting tube is fixedly connected to a first motor. The output shaft of the first motor passes through the top wall of the collecting tube and is coaxially fixedly connected to a sleeve rotatably connected to the collecting tube. A spiral sheet is fixedly connected to the outer wall of the sleeve, and the bottom end of the collecting tube is fixedly connected to a collecting cover, and a filter screen with an annular structure is fixedly connected inside the collecting cover. The filter screen is a truncated cone with a large bottom area and a small top area. A baffle is symmetrically fixedly connected to the bottom end of the collecting cover, and the horizontal projection distance between the bottom end of the collecting tube and the side wall of the carrying box is greater than the horizontal projection distance between the top end of the collecting tube and the side wall of the carrying box.

[0008] The principle of the basic solution is: use the collection tube as a channel for transporting sediment, drive the sleeve to rotate through the first motor, and the sleeve drives the spiral blade to spirally lift the sediment to realize the collection of sediment, separate the impurities in the sediment through the filter screen, and collect the separated impurities through the baffle.

[0009] The beneficial effects of the basic scheme are: 1. Due to the presence of impurities such as domestic garbage in the bottom mud, some impurities will affect the elution process, causing pollutants that pollute the water body to be generated after elution. Therefore, filtering the impurities in the bottom mud through the filter can, on the one hand, improve the efficiency of elution and reduce the probability of secondary pollutants generated by elution, and on the other hand, it can have a cleaning effect on the bottom mud.

[0010] 2. As the bottom mud is lifted by the spiral blade located on the outside of the sleeve, the design of the filter will make the separated impurities move to the center of the circle. The impurities accumulate at the center of the filter, which can not only screen out the impurities, but also reduce the impact of filter blockage on the bottom mud lifting.

[0011] 3. By integrating the elution treatment, stabilization treatment and collection treatment in the carrying box, efficient sludge purification treatment can be achieved.

[0012] Furthermore, an electric hydraulic cylinder is fixedly connected to the bottom wall of the carrying box, and a carrying plate is fixedly connected to the output end of the electric hydraulic cylinder. A second motor is embedded in the carrying plate, and the output shaft of the second motor is coaxially fixedly connected to the operating box. A rotating drum fixedly connected to the operating box is sleeved on the outer side of the second motor, and the bottom end of the rotating drum is rotatably connected to the carrying plate, and the operating box and the carrying plate are slidably matched.

[0013] The beneficial effects of the basic solution are: the coordinated use of the electric hydraulic cylinder and the second motor can realize the lifting and rotation of the operating box, achieve the effect of multi-directional collection, enhance the flexibility of the equipment and the comprehensiveness of bottom mud collection, and the sliding matching design of the operating box and the carrying plate reduces friction and improves the stability of the equipment.

[0014] Furthermore, the elution component includes a elution block, and the solidification component includes a solidification block. A partition is provided at the connection between the solidification block and the elution block. The elution block and the solidification block are fixedly connected into one by the partition. The elution block is connected to the collection pipe through the mud inlet. The top wall of the elution block is fixedly connected with an elution pipe. The elution pipe is used to pump the elution liquid, and the landing point of the elution liquid is located on the inner wall of the elution block below the mud inlet.

[0015] The beneficial effects of the basic scheme are: the eluent is pumped through the eluent tube, and the eluent with impact force will impact the falling sludge. The eluent is pumped through the eluent tube to directly impact and mix the sludge when it falls out of the sludge inlet, thereby reducing the probability of unmixed sludge and eluent. In addition, impact mixing is conducive to the uniform mixing of the eluent and sludge, thereby improving the efficiency of heavy metal removal.

[0016] Furthermore, an infrared sensor is fixedly connected to the spiral sheet, and a solenoid valve is fixedly connected to the elution tube.

[0017] The beneficial effect of the basic solution is that the combined use of infrared sensors and solenoid valves can monitor the presence of sludge in real time and control the pumping of the eluent, effectively reducing the waste of resources.

[0018] Furthermore, a semi-cylindrical diverter column is fixedly connected to the inner wall of the elution block away from the mud inlet, a number of vertically staggered channel plates are fixedly connected between the diverter column and the elution block, and a connection port connecting the elution block and the solidification block is provided on the inner wall of the elution block near the channel plate with the lowest height.

[0019] The beneficial effects of the basic scheme are: the design of the diverter column and channel plate can enable the sludge to undergo repeated flushing and impact mixing during the elution process, and can also increase the time required for passage, increase the contact time and mixing degree between the eluent and the sludge, and improve the removal efficiency of heavy metals.

[0020] Furthermore, a plurality of water filtering holes for solid-liquid separation of bottom mud are provided on the channel plate with the lowest height, and a drainage pipe is fixedly connected to the bottom of the elution block.

[0021] The beneficial effect of the basic scheme is that through the water filter holes and the drainage pipe at the bottom of the elution block, the solid-liquid separation of the sludge and the removal of waste liquid containing heavy metals are achieved, which is beneficial to the subsequent stabilization treatment.

[0022] Furthermore, a feeding pipe for feeding a mixture of curing agent and stabilizer is fixedly connected to the top of the curing block, and a heating plate is fixedly connected to the side wall of the curing block.

[0023] The beneficial effects of the basic solution are: the design of the heating plate accelerates the solidification process and further enhances the stabilization effect of heavy metals. In addition, the heat generated by the heating plate is transferred to the elution block, which can promote the uniform mixing of the eluent and the bottom mud and improve the efficiency of the elution treatment.

[0024] Furthermore, a heavy metal monitor is fixedly connected inside the solidification block, an electric-controlled telescopic valve is provided at the bottom of the solidification block, the electric-controlled telescopic valve is embedded in the bottom wall of the elution block, and a mud outlet is opened on the bottom wall of the box body corresponding to the electric-controlled telescopic valve.

[0025] The beneficial effects of the basic solution are: the heavy metal monitor can monitor the heavy metal content of the bottom mud in the solidification block in real time and compare it with the safety threshold to ensure the reliability of the treatment effect. On the other hand, the solidification stabilization time is controlled, and the design of the electric telescopic valve can control the discharge of the bottom mud according to the heavy metal monitoring results, thereby improving the accuracy and automation of the treatment.

[0026] Furthermore, the elution tube and the drain tube are both made of glass.

[0027] The beneficial effect of the basic solution is that the elution pipe and the drain pipe are made of glass, which can effectively reduce the impact of the corrosion of the pipeline by the acidic elution liquid on the treatment efficiency and extend the service life of the equipment.

[0028] Further, the control system includes an identification module, a monitoring module and a driving module;

[0029] The identification module is used to identify whether there is bottom mud in the collection tube through an infrared sensor, and transmit a signal representing "there is bottom mud passing through" or a signal representing "no bottom mud passing through" to the driving module;

[0030] The detection module is used to monitor the heavy metal content in the solidified block and compare it with the safety threshold of the heavy metal content value. When the heavy metal content value is less than the safety threshold of the heavy metal content value, a signal representing "solidification is completed" is transmitted to the driving module;

[0031] The driving module is used to receive signals from the identification module and the detection module. When an electrical signal representing "bottom mud passing" is received, the solenoid valve is driven to open. When a signal representing "no bottom mud passing" is received, the solenoid valve is driven to close, and the electric hydraulic cylinder and the second motor are driven in sequence to complete a cycle of motion. When a signal representing "solidification is completed" is received, the electric-controlled telescopic valve is driven to open.

[0032] The beneficial effects of the basic solution are: the modules work together to achieve intelligent control and monitoring of the entire process of the equipment, improving the treatment efficiency and stability of the treatment effect. In addition, the identification module monitors the collection of sludge in real time to reduce the waste of eluent caused by continuous pumping of eluent when there is no sludge. The cooperation of the monitoring module and the drive module ensures the effective removal and stabilization of heavy metals. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1It is an overall axonometric schematic diagram of an environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0034] Figure 2 It is a schematic cross-sectional view of the distribution inside the carrying box of the environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0035] Figure 3 It is a front cross-sectional view of a collection pipe in an environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0036] Figure 4 It is an axonometric perspective view of the elution block in the environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0037] Figure 5 It is a front cross-sectional view of the elution block in the environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0038] Figure 6 It is an axonometric schematic diagram of a solidification block in an environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0039] Figure 7 It is a front cross-sectional view of a solidification block in an environmentally friendly sludge heavy metal removal and stabilization treatment device in an embodiment of the present invention.

[0040] The figure marks in the drawings of the specification include: 1. carrying box; 101. electric hydraulic cylinder; 102. carrying plate; 103. second motor; 2. operating box; 3. elution block; 301. elution tube; 302. solenoid valve; 303. diverter column; 304. channel plate; 305. drain pipe; 4. curing block; 401. heating plate; 402. feeding pipe; 5. collection tube; 501. first motor; 502. spiral sheet; 503. infrared sensor; 6. collection cover; 601. filter screen; 602. baffle. DETAILED DESCRIPTION

[0041] The following is further described in detail through specific implementation methods:

[0042] Embodiment 1:

[0043] Basically as attached Figure 1 and Figure 3 As shown: An environmentally friendly sediment heavy metal removal and stabilization treatment device includes a carrying box 1, in which an operating box 2 is rotatably connected, and the operating box is a cylindrical structure as a whole. The operating box 2 is provided with a leaching component for chemical leaching to remove heavy metals and a solidifying component for solidifying and stabilizing heavy metals. A collecting component for lifting and collecting sediment is welded on one side of the operating box 2 close to the leaching component.

[0044] Specifically, the collection assembly includes a collection tube 5 with an opening at the bottom end, and a mud inlet for lifting and collecting the bottom mud is provided at the top of the collection tube 5 near the elution assembly. A person skilled in the art can set a filter at the mud inlet according to needs to prevent impurities (domestic garbage, aquatic plant and animal remains, stones, etc.) contained in the bottom mud from entering the operation box 2. The bottom end of the collection tube 5 passes through the side wall of the carrying box 1, and the top of the collection tube 5 is fixedly connected with a first motor 501 by bolts. The output shaft of the first motor 501 is coaxially connected with a sleeve through a coupling. The sleeve is rotatably connected to the collection tube 5 through a bearing, and a spiral sheet 502 for spirally lifting the bottom mud is welded on the outer wall of the sleeve. The spiral sheet 502 fits and slides with the wall of the collection tube 5. When there is sediment at the bottom of the spiral sheet 502, the start-up of the first motor 501 will drive the sleeve to rotate, and the rotation of the sleeve will drive the spiral sheet 502 to rotate together. Through the spiral upward structure of the spiral sheet 502, the sediment will be lifted upward circle by circle due to the inertial force of the position change, thereby realizing the extraction of the sediment. The sediment is collected from the bottom of lakes, rivers, etc. and lifted to the operating box 2, which is convenient for subsequent heavy metal removal and stabilization treatment.

[0045] Secondly, in order to preliminarily filter the impurities that may be contained in the bottom mud during the collection stage, a collection cover 6 is welded at the bottom end of the collection tube 5, and a ring-shaped filter screen 601 is welded inside the collection cover 6. The outer ring end of the filter screen 601 is welded to the inner wall of the collection cover 6, and the inner ring end of the filter screen 601 is welded to the bottom end of the sleeve. The connection relationship of the filter 601 makes the filter 601 present a truncated cone structure with a small top cross-sectional area and a large bottom cross-sectional area. When the collection cover 6 covers the bottom mud downward, due to the small particle size of the bottom mud, other impurities with larger particle sizes, such as domestic garbage, remains of aquatic plants and animals, and stones, will be screened out by the filter 601. Plastic foam and other polymers that have an impact on the elution process and the solidification process will be affected by the upward buoyancy and gather toward the top of the filter 601 along the truncated cone structure of the filter 601 due to the property that the density is less than that of water. As the bottom mud is lifted, the spiral sheet 502 located on the outside of the sleeve is lifted, and the impurities are accumulated at the center of the filter 601, which can not only achieve the screening of impurities, but also reduce the impact of the blockage of the filter 601 on the lifting of the bottom mud.

[0046] Again, the impurities filtered out from the bottom mud need to be collected to prevent their residue from affecting the environment. A baffle 602 for holding the impurities is symmetrically welded at the bottom of the collection cover 6. When the collection is completed, the first motor 501 stops driving or the collection tube 5 is lifted as a whole, the impurities will fall from the filter screen 601 due to the downward force of gravity, and the baffle 602 can hold and collect the impurities, thereby increasing the cleaning effect on the water environment of lakes, rivers, etc., and preventing them from continuing to pollute the environment.

[0047] The horizontal projection distance between the bottom end of the collection tube 5 and the side wall of the carrying box 1 is greater than the horizontal projection distance between the top end of the collection tube 5 and the side wall of the carrying box 1; this design makes the collection tube 5 inclined, thereby improving the effect of the spiral lifting force on the bottom mud and improving the lifting efficiency of the spiral blade 502. On the other hand, the inclined design is conducive to the impurities with a density lower than that of water, such as plastic sheets and foam, which are partially accumulated in the bottom mud and float on the surface, which is beneficial to subsequent cleaning and collection.

[0048] Embodiment 2:

[0049] As attached Figure 2 As shown, the difference from the above embodiment is that an electric hydraulic cylinder 101 is welded to the bottom wall of the carrying box 1, a carrying plate 102 is welded to the output end of the electric hydraulic cylinder 101, a second motor 103 is embedded in the carrying plate 102, the second motor 103 is a stepping motor, the output shaft of the second motor 103 is coaxially fixedly connected to the operation box 2 through a shaft coupling, a rotating drum welded to the operation box 2 is sleeved on the outside of the second motor 103, and the bottom end of the rotating drum is rotatably connected to the carrying plate 102 through a bearing, and the operation box 2 and the carrying plate 102 are slidably matched; since the bottom mud is scattered in the form of flakes at the bottom of the lake, after completing a bottom mud mining, When collecting, start the electric hydraulic cylinder 101 to extend the output end of the electric hydraulic cylinder 101 to lift the operation box 2. Since the operation box 2 is welded to the collection tube 5, the lifting of the operation box 2 can drive the collection tube 5 to leave the current collection area, and then start the second motor 103, the operation box 2 rotates, and the collection tube 5 will also be driven to rotate accordingly, and the second motor 103 is stopped to reach the next collection area, and the output end of the electric hydraulic cylinder 101 is retracted, the operation box 2 moves downward, and the collection tube 5 drives the collection cover 6 to collect the bottom mud in the next area, thereby realizing the automation of bottom mud collection and facilitating the collection operation.

[0050] In addition, when the operating box 2 moves, the elution treatment and the solidification stabilization treatment respectively performed by the elution component and the solidification component in the operating box 2 will also be carried out simultaneously. The oscillation effect generated by the movement of the operating box 2 is beneficial to the mixing of the elution liquid and the bottom mud, making the mixing more uniform and enhancing the effect of eluting and removing heavy metals. In addition, the movement of the operating box 2 drives the movement of the collection tube 5, and the collection tube 5 is also affected by the oscillation effect, which is beneficial to shake off the impurities on the filter screen 601 and reduce the lifting efficiency of the spiral blade 502 on the bottom mud due to the blockage of the filter screen 601.

[0051] Embodiment 3:

[0052] As attached Figure 2 , Figure 4 and Figure 6As shown, the difference from the above embodiment is that the rinsing component includes a rinsing block 3, the solidification component includes a solidification block 4, a partition is provided at the connection between the solidification block 4 and the rinsing block 3, the rinsing block 3 and the solidification block 4 are both semi-cylindrical structures and the radii of the two are equal, and this structure is conducive to reducing the friction between the rinsing block 3 and the solidification block 4 and the supporting box 1, as well as the rotation of the rinsing block 3. The elution block 3 and the solidification block 4 are fixedly connected together by a partition, the elution block 3 is connected to the collection tube 5 through the mud inlet, and the top wall of the elution block 3 is welded with a elution tube 301, which is used to pump the elution liquid, and make the landing point of the elution liquid be located at the inner wall of the elution block 3 below the mud inlet; because the spiral blade 502 lifts the bottom mud layer by layer, the lifting process is not a continuous and uninterrupted conveying, so the bottom mud lifted through the mud inlet will be scattered and thrown out, and the elution tube 301 will pump the elution liquid, and the pumping force and gravity will make the elution liquid fall out of the elution tube 301 faster and with impact force. The elution liquid pumped through the elution tube 301 is directly impact-mixed when the bottom mud falls out of the mud inlet, thereby improving the mixing effect with the bottom mud and reducing the probability of the bottom mud and the elution liquid not being mixed. In addition, the impact mixing is conducive to the uniform mixing of the elution liquid and the bottom mud, and can increase the effect of the elution liquid on removing heavy metals in the bottom mud.

[0053] Embodiment 4:

[0054] As attached Figure 4 and Figure 5 As shown, the difference from the above embodiment is that a semi-cylindrical diverter column 303 is welded on the inner wall of the elution block 3 away from the mud inlet, and a plurality of vertically staggered channel plates 304 are welded between the diverter column 303 and the elution block 3. The intersections of the plurality of channel plates 304 form a height difference with each other, and a connection port connecting the elution block 3 and the solidification block 4 is provided at a position of the inner wall of the elution block 3 near the channel plate 304 with the lowest height; the bottom mud mixed with the eluent will fall to the top surface of the diverter column 303, and will be retained along the top surface. The liquid flows downward into the channel formed by several channel plates 304, and the channel transforms the original vertical downward flow path into a winding and repetitive flow path. This design can slow down the flow rate of the mixture, increase the reaction time of the eluent, and improve the removal efficiency of the eluent for heavy metals in the sediment. In addition, due to the height difference between the channel plates 304 and the channel plates 304, when the mixture passes through, it will be affected by gravity and fall to the channel plate 304 of the next layer, generating a reverse impact force, thereby improving the mixing degree of the eluent and the sediment.

[0055] The lowest channel plate 304 is provided with a plurality of filter holes for solid-liquid separation of the bottom mud, and the bottom of the elution block 3 is connected with a drain pipe 305. Due to the effect of the elution liquid, the heavy metals in the bottom mud are transferred from the solid phase to the liquid phase, so the bottom mud is separated from the solid and liquid to filter out the liquid containing the heavy metals. When the mixture flows through a plurality of channel plates 304 and reaches the lowest channel plate 304, it flows through a plurality of filter holes. Since the main component of the bottom mud is solid particles, the design of the filter holes is used to separate the bottom mud mixture from the solid and liquid, which is beneficial to the removal of heavy metals in the bottom mud.

[0056] The elution tube 301 and the drainage tube 305 are both made of glass. Since heavy metals in the sediment are removed by elution, the optimal pH value of the environment for the reaction between the elution liquid and the sediment is 3-4. Therefore, the liquid in the elution tube 301 and the drainage tube 305 is an acidic liquid. The glass material design can reduce the impact of metal corrosion on the elution effect.

[0057] Embodiment 5:

[0058] As attached Figure 6 and Figure 7 As shown, the difference from the above embodiment is that a feeding pipe 402 for feeding a curing agent and a stabilizer mixture is welded on the top of the curing block 4, and a heating plate 401 is embedded in the side wall of the curing block 4; the sludge mixture enters the curing block 4 from the elution block 3 through the connection port. Since the heavy metal removal by elution cannot completely remove the heavy metals in the sludge, the remaining heavy metals in the sludge need to be treated by curing and stabilizing treatment. After the curing agent and the stabilizer mixture are added, the sludge falling into the curing block 4 will be heated by the heating plate 401, which shortens the curing time and enhances the effect of the stabilization treatment. In addition, since the curing block 4 and the elution block 3 are separated only by a partition, the heating plate 401 on the side wall of the curing block 4 will transfer heat from the curing block 4 to the elution block 3 when heated, and the temperature increase will make the molecules of the eluent in the flowing sludge mixture more active, further making the eluent and the sludge evenly mixed.

[0059] Embodiment 6:

[0060] As attached Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the difference from the above embodiment is that it also includes a control system, which includes an identification module, a monitoring module and a driving module;

[0061] An infrared sensor 503 is fixedly connected to the spiral piece 502, and an electromagnetic valve 302 is fixedly connected in the elution tube 301; the identification module is used to identify whether there is bottom mud in the collection tube 5 through the infrared sensor 503, and transmit a signal representing "there is bottom mud passing through" or a signal representing "no bottom mud passing through" to the driving module; the infrared sensor 503 determines whether there is bottom mud being lifted in the spiral piece 502 according to the condition of whether there is obstruction, and at the same time, transmits a signal representing "there is bottom mud passing through" and a signal representing "no bottom mud passing through" to the driving module to reflect whether collection is being carried out at this time.

[0062] A heavy metal monitor is fixedly connected inside the solidification block 4, an electric-controlled telescopic valve is provided at the bottom of the solidification block 4, the electric-controlled telescopic valve is embedded in the bottom wall of the elution block 3, and a mud outlet is provided on the bottom wall of the box body corresponding to the electric-controlled telescopic valve; the detection module is used to monitor the heavy metal content in the solidification block 4 through the heavy metal monitor, and compare it with the safety threshold of the heavy metal content value. When the heavy metal content value is less than the safety threshold of the heavy metal content value, a signal representing "solidification is completed" is transmitted to the drive module; the heavy metal monitor monitors the heavy metal content of the solidified bottom mud in the solidification block 4 in real time, and the detection module collects the value and compares it with the heavy metal content of the safety threshold, and sends a signal to the drive module when it is lower than the safety threshold.

[0063] The driving module is used to receive signals from the identification module and the detection module. When it receives an electrical signal representing "sediment passing through" (sediment collection is in progress), it drives the solenoid valve 302 to open, thereby controlling the pumping volume of the eluent and reducing the excess eluent pumping during the process of not collecting sediment.

[0064] When the driving module receives a signal from the detection module indicating "solidification is completed" (heavy metal content is lower than the safety threshold), it drives the electrically controlled telescopic valve to open, allowing the bottom mud in the solidification block 4 that has undergone solidification and stabilization treatment to fall out of the solidification block 4, thereby controlling the solidification time and improving the efficiency of the stabilization treatment.

[0065] When the driving module is in the state where the first motor 501 is started and a signal representing "no bottom mud passing" is received for a long time (for collecting bottom mud), the driving module will first drive the electric hydraulic cylinder 101 to extend, and then start the second motor 103. Since the second motor 103 is a stepping motor, it will rotate for a cycle after being driven, and after completing a rotation of the width of the collection cover 6, the electric hydraulic cylinder 101 will be retracted to complete a rotation cycle of the operating box 2, thereby realizing the automation of multi-directional collection and improving the collection efficiency.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An environmentally friendly device for removing and stabilizing heavy metals from sludge, characterized in that: The invention comprises a carrying box (1), wherein an operating box (2) is rotatably connected inside the carrying box (1), wherein a leaching component for chemically leaching to remove heavy metals and a solidification component for solidifying and stabilizing heavy metals are arranged inside the operating box (2), and a collecting component for lifting and collecting bottom mud is fixedly connected to a side of the operating box (2) close to the leaching component; The collection component comprises a collection tube (5) with an opening at the bottom end, a mud inlet for lifting and collecting bottom mud is provided at the top of the collection tube (5) near the elution component, the bottom end of the collection tube (5) passes through the side wall of the carrying box (1), the top of the collection tube (5) is fixedly connected to a first motor (501), the output shaft of the first motor (501) passes through the top wall of the collection tube and is coaxially fixedly connected to a sleeve rotatably connected to the collection tube, the outer wall of the sleeve is fixedly connected to a spiral sheet (502), the spiral sheet (502) is fixedly connected to an infrared sensor (503), the bottom end of the collection tube (5) is fixedly connected to a collection cover (6), a filter screen (601) of an annular structure is fixedly connected inside the collection cover (6), the filter screen (601) is a truncated cone with a large bottom surface area and a small top surface area, the bottom end of the collection cover (6) is symmetrically fixedly connected to a baffle (602), the horizontal projection distance between the bottom end of the collection tube (5) and the side wall of the carrying box (1) is greater than the horizontal projection distance between the top end of the collection tube (5) and the side wall of the carrying box (1); The elution assembly comprises an elution block (3), and the solidification assembly comprises a solidification block (4). A partition is provided at the connection between the solidification block (4) and the elution block (3). The elution block (3) and the solidification block (4) are fixedly connected to form a whole through the partition. The elution block (3) is connected to the collection pipe (5) through a mud inlet. The top wall of the elution block (3) is fixedly connected to an elution pipe (301). An electromagnetic valve (302) is fixedly connected inside the elution pipe (301). The elution pipe (301) is used to pump the elution liquid. The falling point of the elution liquid is located at the inner wall of the elution block (3) below the mud inlet. A semi-cylindrical diverter column (303) is fixedly connected to the inner wall of the elution block (3) away from the mud inlet. A plurality of vertically staggered channel plates (304) are fixedly connected between the diverter column (303) and the elution block (3). A connection port for connecting the elution block (3) and the solidification block (4) is provided at a position of the inner wall of the elution block (3) close to the channel plate (304) with the lowest height. The bottom wall of the carrying box (1) is fixedly connected to an electric hydraulic cylinder (101); the output end of the electric hydraulic cylinder (101) is fixedly connected to a carrying plate (102); a second motor (103) is embedded in the carrying plate (102); an output shaft of the second motor (103) is coaxially fixedly connected to the operating box (2); a rotating drum fixedly connected to the operating box (2) is sleeved on the outer side of the second motor (103); the bottom end of the rotating drum is rotatably connected to the carrying plate (102); and the operating box (2) and the carrying plate (102) are slidably matched.

2. The environmentally friendly sludge heavy metal removal and stabilization treatment device according to claim 1 is characterized by: A plurality of water filtering holes for solid-liquid separation of bottom mud are provided on the channel plate (304) with the lowest height, and a drainage pipe (305) is fixedly connected to the bottom of the elution block (3).

3. The environmentally friendly sludge heavy metal removal and stabilization treatment device according to claim 2 is characterized by: A feeding pipe (402) for feeding a mixture of a curing agent and a stabilizer is fixedly connected to the top of the curing block (4), and a heating plate (401) is fixedly connected to the side wall of the curing block (4).

4. The environmentally friendly sludge heavy metal removal and stabilization treatment device according to claim 3 is characterized by: A heavy metal monitor is fixedly connected inside the solidifying block (4), an electric-controlled telescopic valve is provided at the bottom of the solidifying block (4), the electric-controlled telescopic valve is embedded in the bottom wall of the leaching block (3), and a mud outlet is provided on the bottom wall of the box body corresponding to the electric-controlled telescopic valve.

5. The environmentally friendly sludge heavy metal removal and stabilization treatment device according to claim 4 is characterized by: The elution pipe (301) and the drainage pipe (305) are both made of glass.

6. The environmentally friendly sludge heavy metal removal and stabilization treatment device according to claim 5 is characterized by: It also includes a control system, which includes an identification module, a monitoring module and a driving module; An identification module, used to identify whether there is bottom mud in the collection tube (5) through an infrared sensor (503), and transmit a signal representing "there is bottom mud passing through" or a signal representing "there is no bottom mud passing through" to the driving module; A monitoring module, used for monitoring the heavy metal content in the solidification block (4) through a heavy metal monitor, and comparing it with a safety threshold of the heavy metal content value, and transmitting a signal representing "solidification completed" to the driving module when the heavy metal content value is less than the safety threshold of the heavy metal content value; The driving module is used to receive signals from the identification module and the detection module, and when receiving an electrical signal representing "the existence of bottom mud passing through", drives the electromagnetic valve (302) to open; when receiving a signal representing "no bottom mud passing through", drives the electromagnetic valve (302) to close, and sequentially drives the electric hydraulic cylinder (101) and the second motor (103) to complete a cycle movement; when receiving a signal representing "the solidification is completed", drives the electric control telescopic valve to open.

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